Șinca (German: Alt-Schenk; Hungarian: Ósinka) is a commune in Brașov County, Transylvania, Romania.

It is composed of six villages: Bucium (Bucsum), Ohaba (Ohába), Perșani (Persány), Șercăița (Sarkaica), Șinca Veche (the commune center), and Vâlcea (Valcsatelep).

The commune is located in the central part of the county, in a hilly area between the Făgăraș and Piatra Craiului mountains to the south, the Perșani Mountains to the east, and the Olt River to the north, at the eastern edge of the historic Țara Făgărașului region.

It is situated in the southern part of the Transylvanian Plateau, at an altitude of 531 m (1,742 ft).

Șinca is crossed by national road DN73A, which runs from Predeal to Șercaia.